Evaporator for maple-sugar and the like.



C. M. BROWN. EVAPORATOR FOR MAPLE SUGAR AND THE LIKE.

APPLICATION FILED JULY 1. 1915..

Patented Aug. 28, 1917.

4 SHEETS-SHEET I.

C. M. BROWN. EVAPORATOR FOR MAPLE SUGARAND THE LIKE. APPLICATION FILEDJULY 1. 1915.

1,23,489u Patented Aug. 28, 1917.

4 SHEETS-SHEET 3.

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,7: W j i 31mm M Q C. M. BROWN. EVAPORATOR FOR MAPLE SUGAR AND THE LIKE.APPLICATION FILED JULY 1. I915.

1,238,49, Patented Aug. 28, 191?.

4 SHEETS--SHEET 4.

CLAUDE MORTIMER BROWN, OF BURLINGTON, VERMONT.

EVAPORATOIB. FOR MAPLE-SUGAR AND THE LIKE.

Specification of Letters Patent.

Patented Aug. 28, 11917..

Application filed July 1, 1915. Serial No. 87AM.

To all whom it may concern:

Be it known that I, CLAUDE MORTIMER BROWN, a citizen of the UnitedStates of America, and resident of 8 Latham Court, in the city ofBurlington, State of Vermont, in the United States of America, haveinvented certain new and useful Improvements in Evaporators forMaple-Sugar and the like; and I do hereby declare that the following isa full, clear, and exact description of the same.

The invention relates to evaporators for maple syrup and the like, asdescribed in the present specification and illustrated in theaccompanying drawings that form part of the same.

The invention consists essentially of the.

novel construction and arrangement of parts whereby the .feed of the sapis automatically controlled and directed throughout the containers so asto benefit by the distribution of the heating gases.

The objects of the invention are to increase the output in such devices,to economize in the consumption of fuel, to insure the production of asyrup of superior qualit? and generally to provide an evaporator 0simple design and of serviceable and durable construction.

In the drawings, Figure 1 is a side elevation of the evaporator.

Fig. 2 is a lan view of the evaporator.

Fig. 8 is a ongitudinal section on the line 3-3 in Fig. 2.

Fig. 1 is a cross sectional View on the line 44 in Fig. 1.

Fig. 5 is a cross sectional view on the line 55 in Fig. 1.

Fig. 6 is an enlarged detail of the feed control.

Fig. 7 is an enlarged detail of the communications from the front to therear sap pans.

Referring to the drawings, the furnace 1 having the fire box 2 and smokepipe 3 sup ports the front and rear sap pans 4: and 5, said pans beingseparated by their end walls 40 and respectively.

The pan 4 is divided into longitudinal compartments by the partitions41, through which are communicating ports adjacent to front and rearends alternately, so as to insure the flow of the sap along eachcompartment in its circulation through the apparatus.

The pan l is set lower than the pan 5 in the furnace structure, thuswhile the hot gases from the firebox flow along the bottoms of bothpans, they also pass through the tubes 42 which connect the combustionchamber 13 with the smoke pipe 3, through each of the compartmentsformed by the introduction of the partitions 41 in the pan 4, said tubesbeing raised above the bottom of said pan and providing a considerableaddition to the heating surface.

The pan 5 is similarly divided into compartments by the longitudinalpartitions 51, which have front and rear communicating ports alternatelyto secure the proper flow of the sap over the heating surface.

The pan 4 has on one side adjacent to its rear end the opening a l andon the opposite side similarly placed the opening d5.

The pan 5 through the sides adjacent to its front end has the openings52 and 53 respectively.

p The boxes 5st and are secured over the openings 52 and 53 and thepipes 56 and 57 lead from the openings a l and as and form the means ofcommunication between said boxes and the pan 4C.

The boxes 54; and 55 communicate as stated with the pan 5 and pipes 56and 57 and also have each a discharge opening for emptying the syrupduring boiling opera tions. The valves 58 and 59 are opened respectivelyto efiect the discharge from the one or the other side of the machine asthe case may be.

The supplementary pan 6 is supported at the rear end of the pan lcentrally and eX- tends for a portion of the width of the larger pan,said supplementary pan being set on top of the partitions ll and rigidlysecured thereto and to the end wall 10.

The pan 6 is divided by the partition 13 into two compartments 60 and61, said partition being slotted in its upper side as explainedhereinafter.

The compartment-60 is the feed receiving chamber and the compartment 61the feed delivery chamber and both form a primary heating pan.

The partition 13 is provided with ports through which the sap flows fromchamber 60 into chamber 61 and the side walls of the latter have theports 62 through which the sap flows into the pan 4 and as these portsare toward the top of the walls the sap obtains-a preliminary heatingand is therefore not delivered cold into the hot sap in said pan 1. v

The supply pipe 7 is conneoted'to a valve 8 shown in Fig. 6, the arm9-01 thiswalve being connected to the stem 10 of a float 11, as shown inFig. 41. p

'The pant as explained is divided by a partition 13 which supportsthe-valve. This 10 partition has an opening hereinbefore mentioned: ateach end near the base to permit the liquid or sap to flow into thelarger com- "pz'irt-ment thereof.

Plugs '14: are provided fortheportsGQ 15- of th-is 'pan 6 in the largercompartment thereof and also a plug'l'Q for" one or other of theope-nings 4%- (F45.

The operation is'as follows Sap is supplied through the pipe 7, flows'20into'the smaller compartment of the=pan 6 and through"the'openings inthe partition 13 to the larger compartment of said pan. When-saprises to'a:certain height itflows through the opening in the side of the pan ifrom which the plug 12l'1aspreviously been removedandthence'intothe'pa'n 5as indicated by thearrows. This sap winds its way through thepartitions and in' and over the air tubes and through the passage whichis-sl'i'own inFigT-to the rear pan Sand in 'the courseof the arrows tothe passage'on the opposite side from where it "maybe "drawn *o'i'f.T'Vhen'the sap hasrisen to a predeteri'nined height, the float willautomatically shut off theva'lve '8 and stop the "supply of sap. Whenthe-courseof the sap is desired to be changed from one side of the panto-the other,'the plugs 1% maybe removed from the side of the pan onwhich '40 they are showirand put into the apertures on the' oppositeside. The float' an'd valve may be turned around by means of 1'therefdu'ced portion in'the' partition 13-so'that the "floatllavill besuspended'in the opposite '45 side of the pan 4. The plug'12 mayfibe're-"moved from where it is now shown and placed in a corresponding placein' tl1e" oppositeside of the pan. This will cause the syrup or sap toflow in a directly opposite Course to which it is now indicated.

A. draw off pipe 15 is providednear the bottom of the panan'd' extendsthrough the side of -the combustion ehamber'l to facilitate the emptyingof the evaporator.

:The valve i8 issupportedby thei bridge 80, the latter having inwardlyturned ends 81 engaging the flanges 82a11d 83 of the wall ofthe pan'band partition 18 respectively,

.saichpartition flange-.83 being cut out centrally to permit the removaland reversal of the said bridge for transferring thevalve 8 and its gearto the other side of the pan "and thereby 'ohange the circulation of thesap and prevent the accumulation of a deposit in the pans common-in suchwork.

It has been explained how "as the sap "enters from" the feed pipe '7 itflows over the various heating surfaces of the pan- 1- di- "rected bythe longitudinal divisions and fthrough oneor othenof the {pipes 5601'57 in a box or and fromthere into the panfifioWin-g-over theheatingsurfaces'of saidpan to the opening i-11to-the opposite box, where it isdischarged through valve pipe 58 or 59. The pipe 15is'con'nected withthe combustion gas; passage'ii orclearing out the gases preparatory toremoving the boilingpans.

WVhatItlaim is:

In a maple sugar evaporator, a frame, front and rearpansseparated byawa1l,-a primary heating pan I having-a; partition dividing it into two"compartments "for [feed and delivery purposes to said'ifront' pan, saidpartition being formed to supporta reversible valve mechanism, saiddelivery "compart- "11161113 emptying into said 'front pan throughoverflow orifices at one side "only, a feed pipe, "21' floatcontrolevalve, il llGXtGlIlllPiLS- sa ge" at the opposite 1 sidefrom'sai d overflow orifices formed bya pipe ffrom -sa'id front pan to" aninlet-chamber directly con-netted with said rear, pan, a'i'al'vesupport-onxsaid partition and primary pa n wall'and removabletherefrom and ava'lve and fl'oatl'gear mechanism connectecbwith 'saidsupport and transferable from one side of the apparatus to the other anda similarly' formed passage forming a discharge'at theepposite side.

I Signed atBurlington, Vermont, tl'liSfifth daybfMay, 1915. V r

cLAUnE MORTIMER snow-n.

Witnesses: i JAMES W LEAGH TERESA E. "Nevins.

" G'ohiesof this pateht may beobtainedforfive cents each, bydddressingthe flommissionertf Patents, Washingtrm,11. 0.

